title: Coronal and apical leakage analysis of two different root canal obturation systems.
abstract: This study compared the coronal and apical leakage of AH Plus with gutta-percha to that of Epiphany with Resilon. Twenty-four single rooted teeth were instrumented and divided into 2 groups according to the solutions for smear layer removal and the obturation materials employed: Group A - 17% EDTA-T and AH Plus with gutta-percha; Group B - primer and Epiphany with Resilon. The Group B specimens were light-cured in the coronal area for 20 s. The external root surfaces were covered with a double layer of ethyl cyanoacrylate, except for the apical foramen and the cavity access. The teeth were immersed in 0.5% methylene blue for 48 h. The specimens were rinsed, dried and axially split for dye penetration measurement with the ImageLab 2.3 software. The t-test showed no significant differences for coronal leakage between the groups, but there were significant differences for apical leakage between the groups (P < 0.05). AH Plus with gutta-percha and Epiphany with Resilon provided the same coronal seal, whereas Epiphany with Resilon provided the best apical seal.
authors.affiliation: School of Dentistry, University of British Columbia, Vancouver, BC, Canada.
authors.forename: Patricia Gimenez
authors.initials: PG
authors.lastname: Oddoni
authors.forename: Isabel
authors.initials: I
authors.lastname: Mello
authors.forename: Jeffrey Martin
authors.initials: JM
authors.lastname: Coil
authors.forename: João Humberto
authors.initials: JH
authors.lastname: Antoniazzi
mesh_terms: D001840:Dental Bonding; D003763:Dental Leakage / Q000517:prevention & control*; D006171:Gutta-Percha; D006801:Humans; D012387:Root Canal Filling Materials / Q000737:chemistry*; D012389:Root Canal Obturation / Q000379:methods* / Q000592:standards; D018915:Root Canal Preparation; D016369:Smear Layer; D019227:Tooth Apex
chemical_list: D012387:Root Canal Filling Materials; D006171:Gutta-Percha